There’s a huge difference between driving in light, normal or heavy snowfall, and that’s before you add in the wind speed and temperature range and the duration.

It’s perfectly normal to drive at highway speed through a light or normal snowfall if the road is clear. What’s important is to know when to slowdown.

There are no hard rules unfortunately, and the best I can tell you is to drive a bit slower than you think would be safe, and that if you at any time feel the wheels lose their grip then you are going way to fast.

If that happens then take your foot of the accelerator and slow down carefully. But if you really need to stop then step on that break as hard as you can and pray that the gods of ABS will allow you to maintain control.

Do not try to pump the brakes or balance on the edge of locking up as that will most likely either have the car spin out of control or take at least twice the distance to stop. Those techniques only works if you train a lot, much more than what most people would be prepared to do, and even then most professional drivers would rather rely on the ABS if they really have to stop NOW. The possible gains are rather small and the possible losses are huge…

As a addition to the good Captain’s comment, when I was learning how to drive, my teacher taught me to “Be The Tortoise” in snow. Slow and steady will win the race, while the hares will end up in the ditch, if they are lucky.